1. Introduction to Signals (Chapter 2 - Lathi's Book)

Note 1 - Introduction.pdf
Note 2 - Signal Energy & Power.pdf
Note 3 - Classification of Signals.pdf
Note 4 - Signal Time-Operations.pdf
Note 5 - Some Example on Time Operation.pdf
Note 6 - Energy & Power for Unit Impulse & Unit Step Signals.pdf
Note 6 - Unit Impulse & Unit Step Functions.pdf
Note 7 - Complex Exponential & Sinusoidal Signals.pdf
Note 8 - Signals & Vectors.pdf

2. Signals and Systems (Chapter 1 - Oppenheim's Book)

Note 9 - Signals & Systems.pdf

3. Fourier Series (Chapter 3 - Oppenheim's Book)

Note 10 - Continuous-Time Fourier Series.pdf
Note 10 - Fourier Series for Impulse Train Signal.pdf
Note 11 - Convergence & Properties of Fourier Series.pdf
Note 11 - Fourier Series of Square Waves (Examples).pdf
Note 11 - Fourier Series of Triangular & Sawtooth Signals (Examples).pdf

4. Fourier Transform (Chapter 4 - Oppenheim's Book)

Note 12 - Continuous-Time Fourier Transform.pdf
Note 12 - More examples on Fourier transform properties.pdf
Note 12 - Table of Fourier Transform Pairs.pdf
Note 13 - Convolution Theorem.pdf
Note 13 - convolution-of-two-functions.pdf

5. Discrete-time Signals and Systems (Chapter 5 - Oppenheim's Book)

6. z-Transform (Chapter 10 - Oppenheim's Book)

Note 14 - Introduction to z-Transform.pdf